as: Equ

 
 7.27 '.equ SYMBOL, EXPRESSION'
 ==============================
 
 This directive sets the value of SYMBOL to EXPRESSION.  It is synonymous
 with '.set'; see See'.set' Set.
 
    The syntax for 'equ' on the HPPA is 'SYMBOL .equ EXPRESSION'.
 
    The syntax for 'equ' on the Z80 is 'SYMBOL equ EXPRESSION'.  On the
 Z80 it is an error if SYMBOL is already defined, but the symbol is not
 protected from later redefinition.  Compare SeeEquiv.